When Business Insider asked Keene for what he considered to be
the
most important chart in the world, he sent us a long-term
chart of the crashing ruble. It goes all the way back to the 1998
Russian financial crisis. In his words:

"Here is USD-RUB with a decimal-point-shift depreciation, call it
4.10 to 41.0. Much was accomplished within the yellow rectangle
... a painful devaluation. From here? My particular question with
currency angst always, always comes from domestic surprise. With
Russia, the calculus is evermore complex. For 2015, USD-RUB 45 or
50 or 55 may be crime and punishment, enough."